Summary:
WITH_TESTS=OFF and WITH_BENCHMARK_TOOLS=ON

there has errors:
 /bin/ld: cannot find -ltestharness

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7040

Reviewed By: riversand963

Differential Revision: D22447637

Pulled By: ajkr

fbshipit-source-id: f63058376deb4a2e6722d63541c40caa617c331a